Command-line tools: F

• f3

  Test various flash cards

• f3d

  Fast and minimalist 3D viewer

• faac

  ISO AAC audio encoder

• faad2

  ISO AAC audio decoder

• faas-cli

  CLI for templating and/or deploying FaaS functions

• fabric

  Library and command-line tool for SSH

• fabric-ai

  Open-source framework for augmenting humans using AI

• fabric-installer

  Installer for Fabric for the vanilla launcher

• fail2ban

  Scan log files and ban IPs showing malicious signs

• faircamp

  Static site generator for audio producers

• faiss

  Efficient similarity search and clustering of dense vectors

• fakecloud

  Free, open-source local AWS cloud emulator for integration testing

• fakeroot

  Provide a fake root environment

• falco

  VCL parser and linter optimized for Fastly

• fallow

  Codebase intelligence for TypeScript and JavaScript

• fancy-cat

  PDF reader for terminal emulators using the Kitty image protocol

• fast_float

  Fast and exact implementation of the C++ from_chars functions for number types

• fastapi

  CLI for FastAPI framework

• fastfetch

  Like neofetch, but much faster because written mostly in C

• fastlane

  Easiest way to build and release mobile apps

• fastly

  Build, deploy and configure Fastly services

• fastmcp

  Fast, Pythonic way to build MCP servers and clients

• fastnetmon

  DDoS detection tool with sFlow, Netflow, IPFIX and port mirror support

• fastp

  Ultra-fast all-in-one FASTQ preprocessor

• fastqc

  Quality control tool for high throughput sequence data

• faudio

  Accuracy-focused XAudio reimplementation for open platforms

• faust

  Functional programming language for real time signal processing

• fava

  Web interface for the double-entry bookkeeping software Beancount

• fb303

  Thrift functions for querying information from a service

• fbthrift

  Facebook's branch of Apache Thrift, including a new C++ server

• fceux

  All-in-one NES/Famicom Emulator

• fclones

  Efficient Duplicate File Finder

• fcrackzip

  Zip password cracker

• fd

  Simple, fast and user-friendly alternative to find

• fdroidserver

  Create and manage Android app repositories for F-Droid

• fdupes

  Identify or delete duplicate files

• feh

  X11 image viewer

• felinks

  Text mode browser and Gemini, NNTP, FTP, Gopher, Finger, and BitTorrent client

• fence

  Lightweight sandbox for commands with network and filesystem restrictions

• fennel

  Lua Lisp Language

• fern-api

  Stripe-level SDKs and Docs for your API

• fernflower

  Advanced decompiler for Java bytecode

• feroxbuster

  Fast, simple, recursive content discovery tool written in Rust

• fetch

  Download assets from a commit, branch, or tag of GitHub repositories

• fetchmail

  Client for fetching mail from POP, IMAP, ETRN or ODMR-capable servers

• ffind

  Friendlier find

• ffmpeg

  Play, record, convert, and stream select audio and video codecs

• ffmpeg-full

  Play, record, convert, and stream many audio and video codecs

• ffmpeg@4

  Play, record, convert, and stream audio and video

• ffmpeg@6

  Play, record, convert, and stream audio and video

• ffmpeg@7

  Play, record, convert, and stream audio and video

• ffmpeg@8

  Play, record, convert, and stream select audio and video codecs

• ffmpegthumbnailer

  Create thumbnails for your video files

• ffms2

  Libav/ffmpeg based source library and Avisynth plugin

• fftw

  C routines to compute the Discrete Fourier Transform

• ffuf

  Fast web fuzzer written in Go

• fheroes2

  Recreation of the Heroes of Might and Magic II game engine

• figlet

  Banner-like program prints strings as ASCII art

• file-formula

  Utility to determine file types

• filebeat

  File harvester to ship log files to Elasticsearch or Logstash

• fileicon

  macOS CLI for managing custom icons for files and folders

• findent

  Indent and beautify Fortran sources and generate dependency information

• findutils

  Collection of GNU find, xargs, and locate

• fio

  I/O benchmark and stress test

• firebase-cli

  Firebase command-line tools

• firefoxpwa

  Tool to install, manage and use Progressive Web Apps in Mozilla Firefox

• fish

  User-friendly command-line shell for UNIX-like operating systems

• fish-lsp

  LSP implementation for the fish shell language

• fisher

  Plugin manager for the Fish shell

• fizz

  C++14 implementation of the TLS-1.3 standard

• flac

  Free lossless audio codec

• flake8

  Lint your Python code for style and logical errors

• flang

  LLVM Fortran Frontend

• flann

  Fast Library for Approximate Nearest Neighbors

• flarectl

  CLI application for interacting with a Cloudflare account

• flashrom

  Identify, read, write, verify, and erase flash chips

• flatbuffers

  Serialization library for C++, supporting Java, C#, and Go

• fleet-cli

  Manage large fleets of Kubernetes clusters

• flex

  Fast Lexical Analyzer, generates Scanners (tokenizers)

• flexget

  Multipurpose automation tool for content

• flint

  C library for number theory

• flix

  Statically typed functional, imperative, and logic programming language

• flock

  Lock file during command

• flow

  Static type checker for JavaScript

• flow-cli

  Command-line interface that provides utilities for building Flow applications

• fltk

  Cross-platform C++ GUI toolkit

• fluent-bit

  Fast and Lightweight Logs and Metrics processor

• fluid-synth

  Real-time software synthesizer based on the SoundFont 2 specs

• flux

  Lightweight scripting language for querying databases

• flyctl

  Command-line tools for fly.io services

• flyway

  Database version control to control migrations

• fmt

  Open-source formatting library for C++

• fn

  Command-line tool for the fn project

• fnm

  Fast and simple Node.js version manager

• fnox

  Fort Knox for your secrets - flexible secret management tool

• fobis

  KISS build tool for automatically building modern Fortran projects

• folderify

  Generate pixel-perfect macOS folder icons in the native style

• folly

  Collection of reusable C++ library artifacts developed at Facebook

• fontconfig

  XML-based font configuration API for X Windows

• fontforge

  Command-line outline and bitmap font editor/converter

• fonttools

  Library for manipulating fonts

• fop

  XSL-FO print formatter for making PDF or PS documents

• foreman

  Manage Procfile-based applications

• foremost

  Console program to recover files based on their headers and footers

• forgecode

  AI-enhanced terminal development environment

• forgejo

  Self-hosted lightweight software forge

• forgejo-cli

  CLI tool for interacting with Forgejo

• forgit

  Interactive git commands in the terminal

• fortio

  HTTP and gRPC load testing and visualization tool and server

• fortitude

  Fortran linter

• fortune

  Infamous electronic fortune-cookie generator

• fossil

  Distributed software configuration management

• foundry

  Blazing fast, portable and modular toolkit for Ethereum application development

• fourmolu

  Formatter for Haskell source code

• fox

  Toolkit for developing Graphical User Interfaces easily

• fpc

  Free Pascal: multi-architecture Pascal compiler

• fping

  Scriptable ping program for checking if multiple hosts are up

• fpm

  Package manager and build system for Fortran

• fprettify

  Auto-formatter for modern fortran source code

• fprobe

  Libpcap-based NetFlow probe

• freeciv

  Free and Open Source empire-building strategy game

• freeglut

  Open-source alternative to the OpenGL Utility Toolkit (GLUT) library

• freeipmi

  In-band and out-of-band IPMI (v1.5/2.0) software

• freeradius-server

  High-performance and highly configurable RADIUS server

• freerdp

  X11 implementation of the Remote Desktop Protocol (RDP)

• freeswitch

  Telephony platform to route various communication protocols

• freetds

  Libraries to talk to Microsoft SQL Server and Sybase databases

• freetype

  Software library to render fonts

• frei0r

  Minimalistic plugin API for video effects

• fresh-editor

  Text editor for your terminal: easy, powerful and fast

• fribidi

  Implementation of the Unicode BiDi algorithm

• fricas

  Advanced computer algebra system

• frotz

  Infocom-style interactive fiction player

• frpc

  Client app of fast reverse proxy to expose a local server to the internet

• frps

  Server app of fast reverse proxy to expose a local server to the internet

• fselect

  Find files with SQL-like queries

• fswatch

  Monitor a directory for changes and run a shell command

• futhark

  Data-parallel functional programming language

• fvm

  Manage Flutter SDK versions per project

• fwup

  Configurable embedded Linux firmware update creator and runner

• fwupd

  Firmware update daemon

• fx

  Terminal JSON viewer

• fzf

  Command-line fuzzy finder written in Go

• fzf-make

  Fuzzy finder with preview window for various command runners including make

• fzf-tab

  Replace zsh completion selection menu with fzf

• fzy

  Fast, simple fuzzy text selector with an advanced scoring algorithm

Try it on your computer

BCD connects ChatGPT, Claude and other AI apps to your own Mac, Windows or Linux computer. One computer is free, with 20,000 tool calls a month and no card.